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a pendulum swings at angle 42 degree in describing an arc of lenght 55 cm . the lenght of the pendulum is :

muhammad zakriya , 6 Years ago
Grade 12th pass
anser 1 Answers
Aditya Gupta
we know the formula L=r*theta from maths, where theta is in radians.
here L is arc length, r is radius and theta is arc angle
so L= 55cm, theta = 42pi/180 rads
so r= L/theta= 75.0302 cm
kindly approve :)
Last Activity: 6 Years ago
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